Suspicious Process Masquerading As SvcHost.EXE
Detects a suspicious process that is masquerading as the legitimate "svchost.exe" by naming its binary "svchost.exe" and executing from an uncommon location. Adversaries often disguise their malicious binaries by naming them after legitimate system processes like "svchost.exe" to evade detection.
Sigma rule (View on GitHub)
1title: Suspicious Process Masquerading As SvcHost.EXE
2id: be58d2e2-06c8-4f58-b666-b99f6dc3b6cd
3related:
4 - id: 01d2e2a1-5f09-44f7-9fc1-24faa7479b6d
5 type: similar
6 - id: e4a6b256-3e47-40fc-89d2-7a477edd6915
7 type: similar
8status: test
9description: |
10 Detects a suspicious process that is masquerading as the legitimate "svchost.exe" by naming its binary "svchost.exe" and executing from an uncommon location.
11 Adversaries often disguise their malicious binaries by naming them after legitimate system processes like "svchost.exe" to evade detection.
12references:
13 - https://tria.ge/240731-jh4crsycnb/behavioral2
14 - https://redcanary.com/blog/threat-detection/process-masquerading/
15author: Swachchhanda Shrawan Poudel
16date: 2024-08-07
17tags:
18 - attack.defense-evasion
19 - attack.t1036.005
20logsource:
21 category: process_creation
22 product: windows
23detection:
24 selection:
25 Image|endswith: '\svchost.exe'
26 filter_main_img_location:
27 Image:
28 - 'C:\Windows\System32\svchost.exe'
29 - 'C:\Windows\SysWOW64\svchost.exe'
30 filter_main_ofn:
31 OriginalFileName: 'svchost.exe'
32 condition: selection and not 1 of filter_main_*
33falsepositives:
34 - Unlikely
35level: high
References
-
Check this xworm report malware sample ee3dad6434cb64d091d15fda5900d088f46b64d0603a449d6bd46afb9705140a, with a score of 10 out of 10.
Read More -
A detection engineer’s guide to the not-so-brilliant disguises that threat actors use when masquerading malware payloads.
Read More
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